a) A star in the sky appears to move by 12 arc seconds over the course of 6 months. Convert this number into first arcminutes then degrees. Show your set-up equation/work.

b) Calculate the distance to the star. Note: Because the apparent view from Earth over the course of 6 months shows a movement equivalent to 2p, or double the parallax angle. you need to divide the apparent motion in half. Show your set-up equation/work.

c) You decide to use the easy hand estimates to tell your friend how far this object is from the moon. Fully outstretched, your fist is typically ~10°. How flow many arcminutes is this? Also report your answer in arcseconds. Show your set-up equation/work.

Answer rating: 100% (QA)

Let me first write the formulas 1 degree 60 arcminutes 1 arc minute 60 arcseconds for p ... View the full answer